Merge pull request #19 from ashaw/master

Committee#find was erroring on committees that were active in other cycles
updated readme
bumped version
Merge branch 'master' of github.com:NYTimes/campaign_cash
elec comm fix
fixed elec. communications constructors
fixed individual contribution constructors
updated candidate tests
added Ruby version supported
whitespace removed. fixes #20
Merge pull request #21 from adelevie/master

Removed bad tabs/whitespace
added late contribution class and tests
added attrs to filing class
added attrs to committee class
added attrs to contribution class
fixed cmte test
fixed test for IEs
have candidate objects return floats
version 2.4
readme updates